Drilling-fixture for lathes



(No-Model.) Q I 2 Sheets-Sheet 2.

- G. F. BALLOT].

DRILLING FIXTURE'FOR LATHBS.

No. 359,875. Patented Mar. 15, 1887.

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UNITED STATES PATENT Erica GEORGE F. BALLOU, OF WALTHAM, MASSACHUSETTS.

DRILLING-FIXTURE FOR LAT HES.

SPECIFICATION forming part of Letters Patent No. 359,375, dated March 15, 1887.

Application filed June 9, 1886.

To all whom it may concern:

Be it known that I, GEORGE F. BALLOU, of

Waltham, in the county of Middlesex and State of Massachusetts, have invented certain new and useful Improvements in Fixtures for Ver tical Drilling, &c., Applicable to Slide-Lathes, of which the following is a full, clear, and exact description.

This invention relates to afixture to be used in slide-lathes for. vertical drilling, milling, reaming, and other like purposes, and is more particularly designed and intended for use in a slide-lathe of the general construction and arrangement of its parts, and more especially of its slidecarriage and slide-rest, fully shown and described in aseparate application for Letters Patent of the United States of even date herewith, filed June 9, 1886, Serial N 0. 204,624, and also in connection with a clamp or vise to hold the work to be drilled, and which is carriedby the slide-rest of the lathe, and of a construction and arrangement of parts fully shown and described in a separate application for Letters Patent of the United States of even date herewith; but, as will be obvious from the description which follows, the fixture of this invention is adapted to be used in slide-lathes and with slide carriages and rests and vises or clamps to hold thework to be drilled of other constructions and arrangement of parts.

This improved verticaldrilling fixture is composed of an upright or standard, which is suitably constructed to be placed and longitudinally adjusted and secured upon thelathe bed or shears, and has a vertical bracket projecting at right angles to the length and in front of the lathe-bed, a vertical spindle or mandrel arranged to rotate in and to move vertically through suitable bearings thereforof said bracket, and its lower end receiving and securing the drill or other tool, in combination with a vertical screw-rod and a vertical worm gear-wheel, both carried by said standard, and the onethe screw-rodconnected'to said tool carrying and rotating spindle and arranged to move vertically through a suitable guideway of the standard, and the 0therthe worm gearwheel-arranged to turn by its arbor in suit able bearings of the standard and to mesh with and onbeing turned to move said screw-rod vertically, and also adapted to be made fast to Serial No. 204,619. (No model.)

and loose from said standard, all substantially as hereinafter described.

Again, this invention consists in the combination, with'a vertical drilling fixture substantially such as above described, of veritcal idler pulley-wheels which are carried by and turn on a support horizontally and vertically adjustable in relation to a shoe-plate, suitably constructed to be placed and longitudinally adjusted and secured on the lathe'bed, and all so that belt-connection may be made between the pulley-wheel of the vertical tool-spindle of the fixture aforesaid and a pulley-wheel attached to and rotating with the rotating arbor or man drel or spindle of the head-stock of a slidelathe for the purpose of rotating said drillspindle from the rotation of said lathe arbor or mandrel.

In the drawings forming a part of this specification the present improved fixture is illustrated in connection with a slide-lathe and slide-carriage-and clamp or vise to holdapiece of Work to be drilled by the fixture of a construction and arrangement of ferred to.

In Plate 1, Figure lis a plan view of the slidelathe and of the fixture of this invention applied to its bed or shears, and of the clamp or vise for securing work in position to be operated upon by the drilling-fixture.

In Plate 2, Fig. 2 is an elevation of thelathebed and fixture of this invention and other parts as the same are shown in Fig. 1, and from the tail-stock end of the lathe, the tail-stock, however, being removed. Fig. 3 is a front view of the drilling part of the fixture detached from the lathe-bed; and Fig. 4 is a horizontal section in detail on line 4 4, Fig. 2.

In the drawings, Arepresents the lathe bed or shears, supported at each end on legs A, and B is the stationary head-stock at one end thereof.

0 is a horizontal arbor mounted and turning in the head-stock B, and interiorly carrying a lathe spindle or mandrel, D, for chucking or otherwise securing a tool or a piece of parts such as re- 7 work thereto, and through it to the arbor of head-stock, all as well known.

E is a cone-pulley of varying diameters, and loose but suitably laterally confined, and F is a gear-wheel fixed on the arbor O, and adapted IOO in any suitable manner to belockcd. with and unlocked from cone-pulley.

G is a gear-wheel on cone-pulley E, and H and J are two gear-wheels, which mesh, respectively, with gear-wheel F of lathe-arbor C of head-stock and gear-wheel G of cone-pal ley E, and are both mounted on a common horizontal shaft, K, which is back of the arbor C and turns in bearings of the head-stock, and otherwise is arranged, as usual, to be adj nsted to place its gear-wheels H J in and out of mesh with the gear-wheels F G of arbor P and conepulley E.

L is a pinion gearwhecl on lathe-arbor C, and this pinion is connected to a leading-screw, M, Fig. 2, through the train of gearing and other mechanism shown in the drawings, and all as fully described in the specification accompanying an application on improvements in slide-lathe for Letters Patent of the United States, hereinbefore referred to, and to which reference is hereby had for a particular description thereof, and whereby said leadingscrew M, from the rotation of the lathe-arbor, can be rotated in either direction, and, again, from the rotation of the leading-screw M a parallel leading'serew (not shown) below and geared with it can he also similarly rotated in either direction. This train of gearing and said mechanism form no part of this invention.

The rotation of the leading-screws referred to is for the purpose of moving a slide-carriage lengthwise along the front check of the lathe bed or shears, and which carriage is suitably constructed therefor, and the upper leading-screw, M, which is for fine work, con nects with sectional or half screw-nuts D of the slide-carriage, and the lower leading-screw, (not shown,) which is for general work, connects with the slide-carriage by mechanism consisting, among other parts, of a hand wheel, N, and otherwise all as fully described and shown in the application aforesaid, and the whole such as to enable the slide-carriage to be moved lengthwise of the lathe-bed in either direction, and either from the action of the driving mechanism of the lathe or by the hand-wheel, and also to enable the speed of such movement to be varied and adjusted and either of the leading-screws to be brought into action upon the application aforesaid. These several parts and their combination and arrangement, as above referred to, form of themselves no partof this invention, and so it is not deemed necessary to herein further describe them.

The slide-carriage is in two parts, to wit: a vertical plate or block, B, with a front fiat face and a back face of angular shape to fit a corresponding angular-shaped guideway, O,

therefor of the front check of the lathe-bed and bracket, with an upright portion, B, arranged toinove vertically in a dovetail way of the front face of the block B and a horizontal arm or table, B, which projects from the upper end of said upright B and at right augles to the length of the slide-carriage, and is made of fork shape, and preferably with the space between its tines open at the front end, B.

The bracket B B is vertically adjustable on the slide-carriage through the turning of a vertical screw -rod, B engaging with the vertical screw-nut portion B of the bracket, and turning loosely within a horizontal bearing-block, B, of the slide-carriage,and therein confined against lengthwise movementin any suitable manner. This screw-rod B, by which to adjust the bracket B B vertically, as above stated, has at its lower end a milled head, 13, peripherally and properly graduated in one hundred equal parts or divisions, each repre senting a onethousandth of an inch, and figured for the rise and fall of the bracket from the turning of said screw, to be measured and determined in one-thousandth parts of an inch, using a suitable index-mark at the front side of the bearing-block B of the screw-rod.

The vertically-adjustable bracket B B of slide-carriage supports and carries a sliderest in two horizontal parts or slides, O" and C, placed upon each other. Slide G--the lower slide of the slide-rest is made with flaring edges, which fit and set over corresponding flaring edges of the bracket-table B. The direction of these flaring edges transversely to the width ofthe bracket table B,and as shown, is preferably such as to permit slide C" to be set bodily upon the bracket-table B without requiring it to he slid lengthwise along the same, and otherwise all arranged for slide C", with the other slide of the slide-rest, to be moved horizontally on the table B forward to and backward from the axial line of the lathe-arbor. A screw-bolt (not shown) projects downward from slide C of slide-rest and between the tines of the forked table B, and 0* isascrew or thumb nut screwing on said bolt and fastening said slide 0 to table 13 and against movement thereon. Slide 0 of the slide-rest fits by a dovetail way in its under side over a corresponding dovetail projection, C, on upper side of lower slide, G, and thus slides C O are adapted for a movement of the upper slide on the lower slide of the two and in a horizontal plane, and one parallel with and in the direction of the horizontal slide of the lower slide, 0', on bracket B B. Slide C has a circular and vertical edge, and it is marked off or graduated in representation of the degrees of a circle, Fig. 2, and it is provided with a horizontal screw-rod,C, which engages with a screw-nut (not shown) and turns loosely in a bearing-block, O, of the lower slide, 0, and by peripheral collar and groove (not shown) is'engaged with said bearing-block O", and thus screw-rod 0", when turned, is confined against lengthwisemovement through said block.

E is the adjustable jaw and E is the stationaryjaw of the work-clan1p 0r vise carried by slide of the slide-rest, and all as fully described and shown in the application before referred to. These clamp-jaws E E form no part of this invention, and in lieu of them other clamps or vises may be used for securing Work-t0 the slide-rest;. but the clamp shown is deemed to be a most preferable one for use in connection with the vertical-drilling attachment of this invention, to be now particularly described.

M is anupright or standard rising from a shoe-plate, M,w'hich sets upon the lathe bed or shears A, and has screw-bolts M and nuts M for fastening it thereon and against movement.

M is a vertical bracket, consisting, in substance, of two horizontal projecting arms at one side of the standard M and to and forward of the front A of the lathe-bed. This bracket M carries a vertical. spindle, M which turns and is free to be moved up and down in suitable bearings thereof. 7

M is a drill secured in the lower end of the spindle M and M a horizontal arm at one end secured to drill-spindle, and its opposite end has a vertical sleeve, M, loosely surrounding the'upper and plain portion of a vertical screw-rod, M and confined against endwise movement between a shoulder, M thereof and the end of the hub M of a hand wheel, M secured by the overlapping head openings on each side of the chamber of-the standard M and which receives the worrngear M The cap-plates M are secured by fastening-screws M, entered through them into the standard M M is a set screw, which screws through one of the cap-plates M and in a direction to be brought to a bearing against one side of the worm-gear M, and thus brought to such a bearing to fasten the gear against movement, making of it a screw-nut to the screw-rod M so that by the then turning of the screw-rod, using the hand-wheel M it will be caused to move vertically, carrying with it,and because of its described connection with the drill-spindle M, such spindle and its drill, and either up or down, according to the direction in which the hand-wheel is turned. Releasing the set-screw M from the bearing against the side of the worm-gear M leaves the Wormgear free to be turned through its shaft M, which has a handle, M, for convenience in turning it, and on so turning worm-gear M screwrod M, and through it the drill-spindle M, are both moved vertically, and either up or down, according to the direction in which the worm-gear is turned.

M is an adjustable screw-stop to the downward movement of the drill-spindle. This stop M" is carried by the horizontal arm M making connection between the drill-spindle M and its operating screw-rod M, and in the downward movement of the drill-rod it comes to a stop against the upper edge of the side bracket, M of the standard M.

The drill-spindle, arranged as above described, has a horizontal pulley-wheel, M partially surrounded by a belt, Q, the two lengths of which extend to and over the upper side of separate vertical idler-pulleys, Q Q*, of a common horizontal shaft, Q supported as hereinafter described, and thence around a vertical pulley-wheel, Q, secured to and turn-' ing with the lathe-arbor, and all so that the rotation of the lathe-arbor rotates the drillrod. The shaft Q of the idler-pulleys is horizontal, and at one end it turns in the upper end of a standard, Q fitting within and vertically adjustable, as also capable of being swung, in the vertical socket Q of a post, Q, split, as at Q", for a portion of its length, and provided with a screw, Q, for tightening its so split portion upon and loosening it from the standard Q The post Q", making the bearings for the standard on which the shaft Q of the idler-pulleys turns, is carried by a shoe-plate, Q, setting upon the lathe bed or shears, and adapted to be adjusted and secured against movement by a fastening screw-bolt, Q and screw-nut Q, the same as described for the shoe-plate M*, carrying the standard M, with the vertical drill-spindle M and its attachment and connections, as has been described.

In theuse of the vertical-drilling fixture herein described it and its idler-pulleys Q are placed upon the lathe-bed, and, having made all adjustments and connections necessary'to present the idler-pulleys in relation to the driving-pulley of the lathe-arbor and the drill and work in the proper relation to each other, the drill-spindle is set in motion, and with the worm gear-wheel M tightened or secured against movement and made a screwnut for the screw-operating rod M, the drill, through the turning of the hand-wheel M is gradually advanced and entered into its work 0, clamped between the clamping-jaws E E of the sliderest, and when the desired depth of bore has been secured-regulated or determined, if so desired, by a previous adjustment of the stop-screw M therefor-the vertical drill is then withdrawn through the turning of the worm gear-wheel, which for such purpose is unbound or released from the standard M by loosening the set-screw M, and, with the drill out of the hole just bored, if the drill 'is again to be returned to bore the work clamped in the lathe, the worm gear-wheel is again tightened up and the drill advanced, as

IIO

has been described, by the turning of' the hand- Wheel, and so on.

Tools other than drills may be used in the fixture of thisinvention and herein described as, for instance, a reaming, a milling, or a boring tooland therefore the invention is not to be limited in that relation.

Having thus described my inventiomwhatl claim, and desire to secure by Letters Patent,

1. A vertical fixture for drilling, reaming, milling, and other purposes, composed of a standard having a side projecting bracket, a rotating vertical spindle for the drill or other tool turning in and vertically movable through bearings of said bracket, a vertical screw-rod carried by and having a vertical movement through said standard and connected to said t0ol-carrying spindle, and a worm-gear meshing with said screw-rod and its arbor. supported and turning in bearings of the standard and adapted to be made fast to and loosened from said standard, substantially as described, for the purpose specified.

2. In the combination, with the lathe bed or shears of a slide-lathe, of a vertical fi'xture for drilling, reaming, milling, and other purposes, composed of a standard constructed for longitudinal adjustment upon and to be fastened to the lathe bed or shears, and having a side projecting bracket, a rotating vertical spindle for the drill or other tool turning in and vertically movable through bearings of said bracket, a vertical screw-rod carried by and screw-rod and its arbor, supported and turning in bearings of the standard and adapted to be made fast to and loosened from said standard, substantially as described, for the purpose specified.

3. In the combination, with the lathe bed or shears of a slide-lathe, of a vertical fixture for drilling, reaming, milling, and other purposes, composed of a standard constructed for longitudinal adjustment upon and to be fastened to the lathe bed or shears, and having a side projecting bracket, a rotating vertical spindle for the drill or other tool turning in and vertically movable through bearings of said bracket, a vertical screw-rod carried by and having a vertical movement through said standard and connected to said topl-carrying spindle, and a worm-gear meshing with said screw-rod and its arbor, supported and turning in bearings of the standard and adapted to be made fast to and loosened from said standard, a pair of idler-pulleys of a'coinmon horizontal shaft turning in suitable bearings of a vertical and horizontal adjustable support, constructed for a longitudinal adjustment upon and for being fastened to thelathe bed or shears, and a pulley-wheel of head-stock spindle or arbor of the lathe, substantially as described, for the purposes specified.

In testimony whereof I have hereunto set my hand in the presence of two subscribing witnesses.

GEO. F. BALLOU.

Vitncsses:

ALBERT W. BROWN, FRANCES M. BROWN. 

